I'm wondering if that's intended. The whole idea of those mini hits is that it gives you more chances to proc things, like Crits. Maybe the devs only had crits in mind for this then? There's not much for us that has to do with Crits though besides the Blazing Fists rune (which is WotHF itself anyway) so that makes me feel like it's pointless and almost gimmicky to have those 7 mini hits. They should proc anything on hit, that's more intuitive and more fun, adds some more depth to choosing this skill and gear (like if a weapon with really good stats + really high Life Per Hit heal drops, it would have been fun to use WotHF for a while).
Anyone else feel the same?